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Days on Lot / Days in Inventory

How long a specific vehicle has been sitting unsold. Past 60 days = the dealer is bleeding [floor plan](/glossary/floor-plan) interest and motivated to discount.

// Why it matters

Days on lot (or "days in inventory" / "days supply" / "aged unit") is how long a specific VIN has been sitting on the dealer's lot unsold. The longer the count, the more floor plan interest the dealer has paid carrying the car — typically $5-$15/day on a $40,000 vehicle. At 90 days, the dealer has burned $450-$1,350 of margin just holding the unit, and most manufacturers begin pulling rebate support after 100-120 days. Dealers desperately want aged units off the lot. Find days-on-lot on CarGurus, Autotempest, or by checking the dealer's website history via the Wayback Machine. Any unit past 60 days is a strong target; past 90 days is a fire sale waiting to happen.

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